Youth models have special age restrictions; the Polaris RZR 170 is intended for operators age 10 and older, 50-cc ATV models are intended for operators ages 6 and over, 90-cc ATV models are intended for operators ages 10 and older, and the 200-cc ATV is intended for operators age 14 and older. All Polaris youth vehicles require adult supervision at all times for operators under age 16.